front wheel fitment.
Thread Starter
Junior Member



Joined: May 2017
Posts: 63
Likes: 3
From: CANADA
Car: 85 IROC
Engine: 5.7
Transmission: T56
Axle/Gears: 4.11 torsen, 4th gen rear
front wheel fitment.
Hi, i searched the forum and didn't quite get a definitive answer.
Is there an OEM swap/salvage or off the shelf aftermarket solution for fitting 4th gen and/or C5 wheels on the front of our 3rd gen cars. I am cool with the 4th gen rear diff swap to get the back wheels on, but what about the fronts - NOT using spacers.
I need bigger rubber. 245/45/16's don't last/aren't fast, need to go 275's on a 17 or 18.
thanks
Is there an OEM swap/salvage or off the shelf aftermarket solution for fitting 4th gen and/or C5 wheels on the front of our 3rd gen cars. I am cool with the 4th gen rear diff swap to get the back wheels on, but what about the fronts - NOT using spacers.
I need bigger rubber. 245/45/16's don't last/aren't fast, need to go 275's on a 17 or 18.
thanks
Joined: Aug 2006
Posts: 12,804
Likes: 103
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: front wheel fitment.
Short answer, no.
You need large bolt on spacers, or find some other wheel
Only other options require extensive modification to the car to fit a different suspension design to fit the wheels.
You could have a custom hub made, and use a very high offset rotor to match the brake offset or some other method. This is expensive as well, last set of custom hubs I had done were nearly 750$ all said and done.
You need large bolt on spacers, or find some other wheel
Only other options require extensive modification to the car to fit a different suspension design to fit the wheels.
You could have a custom hub made, and use a very high offset rotor to match the brake offset or some other method. This is expensive as well, last set of custom hubs I had done were nearly 750$ all said and done.
Supreme Member

Joined: Jul 1999
Posts: 2,755
Likes: 10
From: Ahead of you...
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: front wheel fitment.
There are several direct fit 3rd gen wheels that will give you what you want, but none work with 4th gen rears.
Re: front wheel fitment.
If you aren't willing to use spacers, then you won't find any OEM wheels that will work for this. There are plenty of aftermarket options though. Paul_Huryk can set you up with the CTW wheels which work on a thirdgen and fit 275s. There are also options available through Year One, Classic Industries, Hawks, local tire stores, etc for 17 and 18 inch wheels that will fit 275s. There are even posts in this forum about what is required to fit 315s on all 4 corners. Question is how much do you want to spend to go to a bigger tire. This applies to both the wheels and the tires. Each bump up in size carries additional cost.
Thread Starter
Junior Member



Joined: May 2017
Posts: 63
Likes: 3
From: CANADA
Car: 85 IROC
Engine: 5.7
Transmission: T56
Axle/Gears: 4.11 torsen, 4th gen rear
Re: front wheel fitment.
thanks for the input. this is what i thought, however, i guess i just wanted to make 100% sure. Yes, the money to performance ratio is one we have all lived by. my favorite saying is "Cheap, Fast, Reliable, choose 2"...and personally i will abstain rather than risk a DNF. I will be calling Paul as this makes the most sense from my perspective. The Toyo RR 275-40-17 and the CTW wheel will bolt on and be competitive. Thanks again..Merry Christmas!
Joined: Jul 2011
Posts: 695
Likes: 73
From: New York
Car: 86 Sport Coupe
Engine: 5.3 LM7
Transmission: T56
Axle/Gears: 4th gen 3.42 posi
Re: front wheel fitment.
Hi, i searched the forum and didn't quite get a definitive answer.
Is there an OEM swap/salvage or off the shelf aftermarket solution for fitting 4th gen and/or C5 wheels on the front of our 3rd gen cars. I am cool with the 4th gen rear diff swap to get the back wheels on, but what about the fronts - NOT using spacers.
I need bigger rubber. 245/45/16's don't last/aren't fast, need to go 275's on a 17 or 18.
thanks
Is there an OEM swap/salvage or off the shelf aftermarket solution for fitting 4th gen and/or C5 wheels on the front of our 3rd gen cars. I am cool with the 4th gen rear diff swap to get the back wheels on, but what about the fronts - NOT using spacers.
I need bigger rubber. 245/45/16's don't last/aren't fast, need to go 275's on a 17 or 18.
thanks
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